Catalyst-free visible-light-induced condensation to synthesize bis(indolyl)methanes and biological activity evaluation of them as potent human carboxylesterase 2 inhibitors
作者:Yi-Shu Zhao、Hong-Li Ruan、Xiu-Yang Wang、Chen Chen、Pei-Fang Song、Cheng-Wei Lü、Li-Wei Zou
DOI:10.1039/c9ra08593a
日期:——
A mild strategy for visible-light-induced synthesis of bis(indolyl)methanes was developed using aromatic aldehydes and indole as substrates. This reaction could be performed at room temperature under catalyst- and additive-free conditions to synthesize a series of bis(indolyl)methanes in good to excellent yields. In addition, all synthesized bis(indolyl)methanes together with β-substituted indole derivatives
Oxidative Coupling of Benzylamines with Indoles in Aqueous Medium to Realize Bis‐(Indolyl)Methanes Using a Water‐Soluble Cobalt Catalyst and Air as the Oxidant
作者:Parul Saini、Pratishtha Kumari、Susanta Hazra、Anil J. Elias
DOI:10.1002/asia.201901313
日期:2019.12.2
Oxidativecoupling of benzylamines with indoles to bis-(indolyl)methanes (BIMs) was achieved using an inexpensive water-soluble cobalt complex, Co(bpb). The catalyst was found to be quite effective when air was used as the oxidant and water as solvent under mild reaction conditions. Aromatic amines were successfully converted to the corresponding BIMs with yields up to 85 %. We have successfully carried
TEMPO/CuI synergetic catalyzed oxidative cross-coupling of indoles with benzylamines: Synthesis of bis(indolyl)phenylmethanes
作者:Meixiang Liao、Xiaoyun Zhang、Pengfei Yue
DOI:10.1080/00397911.2018.1459722
日期:2018.7.3
TEMPO/CuI was found to be an effective catalyst for the cross-coupling of indoles with benzylic amines affording the corresponding bis(indolyl)phenylmethanes under air atmosphere at room temperature in good to excellent yields. The efficiency, easy workup, simplicity, and chemoselectivity of this protocol provide a green and low-cost procedure for the synthesis of these compounds.[GRAPHICS].